- Add +x permission to update.sh (was causing systemd 203/EXEC failure)
- Remove $ anchor from grep so trailing space in docker output is matched
- Add .data/ to .gitignore
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Removes the watchtower container in favour of a host-side script that
runs daily at 2:00 AM via systemd timer. Mirrors the _backup pattern:
auto-discovers stacks, pulls images, recreates changed containers,
prunes dangling images, and notifies via n8n → Telegram.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>